Parkhaus is a Berlin-based company that manufactures their products exclusively in high-quality pure wool felt. Felt is the oldest fabric known to mankind, predating both weaving and knitting. In Turkey, felt remains have been found that can be dated back to at least 6,500 BC. Parkhaus takes felt traditions in a decidedly modern direction. Each piece is precision cut. The wool construction is naturally dirt and moisture resistant. These coasters add a warm, textural note to any table or surface. Regular cleaning can be done by blotting with a damp sponge. To deep clean, they can be dry-cleaned or handwashed in cold water with mild soap, laid flat to dry.